Modular building



FIG. 1 is a top perspective view of a modular building incorporating our new design;

FIG. 2 is a rear bottom perspective view thereof;

FIG. 3 is a left or right side view thereof;

FIG. 4 is a front or rear view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines shown in the drawings illustrate portions of the modular building that form no part of the claimed invention. 

CLAIM The ornamental design for a modular building, as shown and described. 